/*
* Copyright (c) 2005-2009 Trident Kirill Grouchnikov. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* o Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* o Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* o Neither the name of Trident Kirill Grouchnikov nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.pushingpixels.trident;
import java.io.*;
import java.net.URL;
import java.util.*;
import org.pushingpixels.trident.TimelineEngine.TridentAnimationThread;
import org.pushingpixels.trident.interpolator.PropertyInterpolator;
import org.pushingpixels.trident.interpolator.PropertyInterpolatorSource;
public class TridentConfig {
private static TridentConfig config;
private Set<UIToolkitHandler> uiToolkitHandlers;
private Set<PropertyInterpolator> propertyInterpolators;
private TridentConfig.PulseSource pulseSource;
public interface PulseSource {
public void waitUntilNextPulse();
}
public static class FixedRatePulseSource implements
TridentConfig.PulseSource {
private int msDelay;
public FixedRatePulseSource(int msDelay) {
this.msDelay = msDelay;
}
public void waitUntilNextPulse() {
try {
Thread.sleep(this.msDelay);
} catch (InterruptedException ie) {
ie.printStackTrace();
}
}
}
private class DefaultPulseSource extends FixedRatePulseSource {
DefaultPulseSource() {
super(40);
}
}
private TridentConfig() {
this.pulseSource = new DefaultPulseSource();
this.uiToolkitHandlers = new HashSet<UIToolkitHandler>();
this.propertyInterpolators = new HashSet<PropertyInterpolator>();
ClassLoader classLoader = Thread.currentThread()
.getContextClassLoader();
try {
Enumeration urls = classLoader
.getResources("META-INF/trident-plugin.properties");
while (urls.hasMoreElements()) {
URL pluginUrl = (URL) urls.nextElement();
BufferedReader reader = null;
try {
reader = new BufferedReader(new InputStreamReader(pluginUrl
.openStream()));
while (true) {
String line = reader.readLine();
if (line == null)
break;
String[] parts = line.split("=");
if (parts.length != 2)
continue;
String key = parts[0];
String value = parts[1];
if ("UIToolkitHandler".compareTo(key) == 0) {
try {
Class pluginClass = classLoader
.loadClass(value);
if (pluginClass == null)
continue;
if (UIToolkitHandler.class
.isAssignableFrom(pluginClass)) {
UIToolkitHandler uiToolkitHandler = (UIToolkitHandler) pluginClass
.newInstance();
uiToolkitHandler.isHandlerFor(new Object());
this.uiToolkitHandlers
.add(uiToolkitHandler);
}
} catch (NoClassDefFoundError ncdfe) {
// trying to initialize a plugin with a missing
// class
}
}
if ("PropertyInterpolatorSource".compareTo(key) == 0) {
try {
Class piSourceClass = classLoader
.loadClass(value);
if (piSourceClass == null)
continue;
if (PropertyInterpolatorSource.class
.isAssignableFrom(piSourceClass)) {
PropertyInterpolatorSource piSource = (PropertyInterpolatorSource) piSourceClass
.newInstance();
this.propertyInterpolators.addAll(piSource
.getPropertyInterpolators());
}
} catch (NoClassDefFoundError ncdfe) {
// trying to initialize a plugin with a missing
// class
}
}
}
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException ioe) {
}
}
}
}
} catch (Exception exc) {
exc.printStackTrace();
}
}
public static synchronized TridentConfig getInstance() {
if (config == null)
config = new TridentConfig();
return config;
}
public synchronized Collection<UIToolkitHandler> getUIToolkitHandlers() {
return Collections.unmodifiableSet(this.uiToolkitHandlers);
}
public synchronized Collection<PropertyInterpolator> getPropertyInterpolators() {
return Collections.unmodifiableSet(this.propertyInterpolators);
}
public synchronized PropertyInterpolator getPropertyInterpolator(
Object... values) {
for (PropertyInterpolator interpolator : this.propertyInterpolators) {
try {
Class basePropertyClass = interpolator.getBasePropertyClass();
boolean hasMatch = true;
for (Object value : values) {
if (!basePropertyClass.isAssignableFrom(value.getClass())) {
hasMatch = false;
continue;
}
}
if (hasMatch)
return interpolator;
} catch (NoClassDefFoundError ncdfe) {
continue;
}
}
return null;
}
public synchronized void addPropertyInterpolator(
PropertyInterpolator pInterpolator) {
this.propertyInterpolators.add(pInterpolator);
}
public synchronized void addPropertyInterpolatorSource(
PropertyInterpolatorSource pInterpolatorSource) {
this.propertyInterpolators.addAll(pInterpolatorSource
.getPropertyInterpolators());
}
public synchronized void removePropertyInterpolator(
PropertyInterpolator pInterpolator) {
this.propertyInterpolators.remove(pInterpolator);
}
public synchronized void addUIToolkitHandler(
UIToolkitHandler uiToolkitHandler) {
this.uiToolkitHandlers.add(uiToolkitHandler);
}
public synchronized void removeUIToolkitHandler(
UIToolkitHandler uiToolkitHandler) {
this.uiToolkitHandlers.remove(uiToolkitHandler);
}
public synchronized void setPulseSource(PulseSource pulseSource) {
TridentAnimationThread current = TimelineEngine.getInstance().animatorThread;
if ((current != null) && current.isAlive())
throw new IllegalStateException(
"Cannot replace the pulse source thread once it's running");
this.pulseSource = pulseSource;
}
public synchronized TridentConfig.PulseSource getPulseSource() {
return pulseSource;
}
}